////////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2009 Julien Etienne.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
////////////////////////////////////////////////////////////////////////////////
package org.siam.impl.data.formatters {
	
	import mx.core.IFactory;
	import mx.formatters.Formatter;
	
	import org.siam.core.data.IDataContext;
	import org.siam.core.data.formatters.IFormatterContext;
	import org.siam.core.data.formatters.IFormattersManager;
	import org.siam.impl.data.DataManager;
	import org.siam.utils.StringUtils;
	
	public class FormattersManager extends DataManager implements IFormattersManager {

		public function FormattersManager() {
		}
		
		public function format(value:Object, formatterId:String):String {
			var context:IFormatterContext = findContext(formatterId) as IFormatterContext;
			if (value == null && context.ifNull != null) {
				return context.ifNull;
			} else if (StringUtils.isEmpty(value as String) && context.ifEmpty != null) {
				return context.ifEmpty;
			}
			var formatter:Formatter = context["formatter"];
			var formattedString:String = formatter.format(value);
			if (formatter.error) {
				formattedString = StringFormatter.INSTANCE.format(value);
			}
			return formattedString;
		}
		
		override protected function createContext(factory:IFactory, metadata:Object):IDataContext {
			return new FormatterContext(factory, metadata["ifNull"], metadata["ifEmpty"]);
		}
	}
}